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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Environmental Science and Sustainable Development
Vayolla Syakirah Karil
Unknown Affiliation
Engineering Environmental Science

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Uji Toksisitas Akut Instalasi Pengolahan Air Limbah (Ipal) Komunal X Kota Pekanbaru Menggunakan Daphnia Magna (Dhapnia sp) Dengan Metode Whole Effluent Toxicity (WET) Vayolla Syakirah Karil; Shinta Elystia; Gunadi Priyambada
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

X Communal Wastewater Treatment Plant (WWTP) in Pekanbaru City is one of the solutions in processing domestic waste water so that it is safe before being discharged into waters. However, the WWTP effluent test results showed the value of COD, TSS, and Ammonia that exceed the quality standard. So there is a need for WET (Whole Effluent Toxicity) testing which is one way to monitor the performance of Wastewater Treatment Plant. This research aims to determine the value of LC50, TUa and analyze the connection between the quality of waste water and the level of toxicity in waste water. Acute toxicity tests were performed by static methods within 96 hours using Daphnia Magna test animals. Mortality of Daphnia magna were analyzed using Probit Method. The value of LC50 is 5,719% and TUa value is 17,486 with category III that means wastewater is on High Acute Toxicity. Measured COD, TSS, Ammonia, and Oil & Fat parameters affect the mortality of test animals, where the value of each of these parameters is directly proportional to the death rate of Daphnia magna. Keywords: Toxicity Test, Communal WWTP, Daphnia magna, WET, LC50.
FACTORS INFLUENCING THE INTENTION TO PARTICIPATE IN DISCARDED FACE MASK MANAGEMENT AMONG URBAN RESIDENTS Karil, Vayolla Syakirah; Nastiti, Anindrya
Journal of Environmental Science and Sustainable Development Vol. 7, No. 1
Publisher : UI Scholars Hub

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Abstract

Massive mask usage during the COVID-19 pandemic has been causing increased mask waste problem. Improper mask management can spread virus in the environment. Proper mask waste management behaviours must be investigated to better understand the underlying factors. Studies have focused on mask waste management in Indonesia, but none have used a comprehensive behavioural framework. This study integrates the Theory of Planned behaviour (TPB) and the Norm Activation Model (NAM) aiming to determine the factors that influence the intentions of Pekanbaru’s residents in managing mask waste. The survey involved 384 respondents selected through a systematic cluster random sampling. The data was analysed with PLS-SEM to verify the model. We hypothesised that awareness of consequences, the ascription of responsibility, subjective and personal norms, attitudes, and perceived behavioural control positively affect behaviour. Attitudes (p < 0.05, t = 2.681), personal norms (p < 0.05, t = 6.708), and perceived behavioral control (p < 0.05, t = 5.846) are also positively and significantly related to mask waste management intention. Awareness of consequences has a significant indirect effect on mask waste management intention through attitude (p < 0.05, t = 2.638), and the highest indirect effects are through ascription of responsibility and personal norms (p < 0.05, t = 4.885). The consequence of awareness, ascription of responsibility, and personal norms are essential elements in enhancing motivations for taking responsibility and participating in household waste management. Demographics such as age and monthly expenses significantly affect mask waste management intentions. This work offers a novel integration of TPB and NAM, which enhances research on the behavioural intents of household mask waste management. Based on the results, the policy implications of how to motivate society to sort waste were discussed, and research limitations were indicated.
Co-Authors Anindrya Nastiti Priyambada, Gunadi Shinta Elystia